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kernel BUG at fs/ext4/inode.c:2763!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4115 Comm: kworker/u4:236 Tainted: G        W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: writeback wb_workfn (flush-7:2)
RIP: 0010:ext4_writepages+0x3085/0x30a0 fs/ext4/inode.c:2762
Code: ae 84 ff 84 db 75 31 e8 99 ab 84 ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 7c 24 20 48 8b 5c 24 30 e9 41 d3 ff ff e8 7b ab 84 ff <0f> 0b e8 74 ab 84 ff e8 0b d3 13 ff eb 98 e8 68 ab 84 ff e8 ff d2
RSP: 0018:ffffc9000c42f120 EFLAGS: 00010293
RAX: ffffffff81eca9a5 RBX: 0000008410000000 RCX: ffff888143471440
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc9000c42f490 R08: ffff888132a25bd7 R09: 1ffff11026544b7a
R10: dffffc0000000000 R11: ffffed1026544b7b R12: 0000000000000001
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff8881220ac000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffaf752ff8 CR3: 000000014bba7000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000003 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x3ab/0x600 mm/page-writeback.c:2494
 __writeback_single_inode+0xd9/0xb10 fs/fs-writeback.c:1622
 writeback_sb_inodes+0x9fd/0x1610 fs/fs-writeback.c:1913
 wb_writeback+0x3eb/0x990 fs/fs-writeback.c:2089
 wb_do_writeback fs/fs-writeback.c:2236 [inline]
 wb_workfn+0x378/0xeb0 fs/fs-writeback.c:2276
 process_one_work+0x717/0xc30 kernel/workqueue.c:2302
 worker_thread+0xa4d/0x11d0 kernel/workqueue.c:2449
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_writepages+0x3085/0x30a0 fs/ext4/inode.c:2762
Code: ae 84 ff 84 db 75 31 e8 99 ab 84 ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 7c 24 20 48 8b 5c 24 30 e9 41 d3 ff ff e8 7b ab 84 ff <0f> 0b e8 74 ab 84 ff e8 0b d3 13 ff eb 98 e8 68 ab 84 ff e8 ff d2
RSP: 0018:ffffc9000c42f120 EFLAGS: 00010293
RAX: ffffffff81eca9a5 RBX: 0000008410000000 RCX: ffff888143471440
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc9000c42f490 R08: ffff888132a25bd7 R09: 1ffff11026544b7a
R10: dffffc0000000000 R11: ffffed1026544b7b R12: 0000000000000001
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff8881220ac000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555588817908 CR3: 000000010fc53000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000003 DR6: 00000000fffe0ff0 DR7: 0000000000000400